v3.20.2

Leases - Summary of Components of Lease Cost Recognized (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease, non-cash lease expense	$ 3.4	$ 3.1	$ 10.0	$ 7.6

X

- Definition

Operating lease non-cash lease expense.

+ References

No definition available.

+ Details

Name:	ddog_OperatingLeaseNonCashLeaseExpense
Namespace Prefix:	ddog_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration